MR Series Hydraulic Motors | High Torque | Hidroman
MR Series Hydraulic Motors: Reliable Drive Solutions for Mobile and Industrial Equipment
Selecting the right hydraulic motor is essential for achieving the required torque, rotational speed and operating performance in a hydraulic system. MR series hydraulic motors convert hydraulic energy into mechanical rotary motion and are designed for applications that require controlled rotation and high torque at relatively low speeds.
The MR series is suitable for consideration in agricultural machinery, mobile equipment and industrial drive systems. Its range of displacement options allows engineers and OEM manufacturers to assess different motor sizes according to the machine’s load, available oil flow and required output speed.
The series includes nine models: MR50C, MR80C, MR100C, MR125C, MR160C, MR200C, MR250C, MR315C and MR400C.
Key features of MR series hydraulic motors
Low-speed, high-torque operation: Designed for hydraulic drive applications requiring substantial torque at controlled rotational speeds.
Multiple displacement options: Different motor sizes support selection according to the required speed, torque and available flow.
Agricultural and mobile applications: Suitable for evaluation in agricultural machinery and mobile hydraulic equipment.
Industrial drive applications: Can be considered for machinery requiring hydraulic rotary actuation.
Roller-based rotor design: The manufacturer describes the roller arrangement as a design feature intended to reduce friction and support operating efficiency.
MR series hydraulic motor specifications
The table below reproduces the model-specific figures published on Hidroman’s product page. The listed maximum speed, torque, pressure difference and flow values are specified for continuous operating conditions.
Model | Displacement (cc/rev) | Max. speed (rpm) | Max. torque (daNm) | Max. pressure difference (bar) | Max. flow (L/min) |
|---|---|---|---|---|---|
MR50C | 51.5 | 775 | 10 | 140 | 40 |
MR80C | 80.3 | 750 | 20 | 175 | 60 |
MR100C | 99.8 | 600 | 24 | 175 | 60 |
MR125C | 125.7 | 475 | 30 | 175 | 60 |
MR160C | 159.6 | 375 | 39 | 175 | 60 |
MR200C | 199.8 | 300 | 45 | 175 | 60 |
MR250C | 250.1 | 240 | 54 | 175 | 60 |
MR315C | 315.7 | 190 | 55 | 135 | 60 |
MR400C | 397 | 150 | 61 | 110 | 60 |
The product page also lists a maximum output power of 15 kW, a minimum speed of 10 rpm, a maximum pressure difference of 175 bar for continuous operation and 200 bar for intermittent operation. These series-level figures should not be interpreted as simultaneously available operating conditions for every model. Always use the selected motor’s individual specifications for engineering calculations.
Shaft and hydraulic connections
The following connection details are published on Hidroman’s MR series page:
Shaft diameter: 25 mm
Main hydraulic ports: A + B = G 1/2"
Leakage oil connection: G 1/4"
The page states a maximum pressure of 175 bar for the leakage-line connection and return-pressure condition.
Confirm the exact shaft, mounting dimensions, port configuration and drain-line requirements against the current technical documentation for the selected model before installation.
Applications of MR series hydraulic motors
Depending on the required operating conditions, MR series hydraulic motors can be evaluated for:
Agricultural machinery and equipment
Mobile hydraulic machinery
Conveyor and material-handling systems
Industrial drive mechanisms
Machinery requiring low-speed rotation and high torque
Final suitability depends on the actual load profile, operating duration, hydraulic circuit and the selected model’s performance limits.
How to select the right MR hydraulic motor
A suitable motor should be selected by evaluating the following parameters together:
Required torque: Check both continuous and intermittent torque requirements against the motor’s ratings.
Output speed: Match the required rotational speed to the motor displacement and available oil flow.
Flow and pressure difference: Ensure that the hydraulic pump and circuit can supply the operating point within the motor’s limits.
Duty cycle: Distinguish continuous operation from intermittent operation when comparing ratings.
Mounting and connections: Verify shaft dimensions, mounting configuration, hydraulic ports and leakage-line requirements.
Hydraulic oil and circuit conditions: Consider oil viscosity, operating temperature, filtration and return-line pressure.
Engineering note: Maximum speed, torque, flow and pressure values should not be assumed to occur simultaneously. Final motor selection must be based on the operating point and the technical data for the specific model.
Find the right hydraulic motor with Hidroman
For OEM projects and hydraulic system integration, selecting the right motor requires more than matching displacement alone. Torque, rotational speed, available flow, pressure difference, duty cycle and mounting requirements all influence the final selection.
Contact Hidroman with your application details to request assistance in identifying a suitable MR series model.
To help evaluate your requirements, include the machine application, required torque and speed, available flow and pressure, mounting dimensions and expected operating cycle.
Frequently asked questions
What is an MR series hydraulic motor?
It is a hydraulic rotary motor that converts fluid power into mechanical rotation and is intended for applications requiring controlled speed and high torque.
Which models are available in the MR series?
The listed models are MR50C, MR80C, MR100C, MR125C, MR160C, MR200C, MR250C, MR315C and MR400C.
What is the maximum torque of the MR series?
The published continuous-operation table lists up to 61 daNm for the MR400C. Hidroman’s page also states a series-level maximum of 69 daNm for intermittent operation. Confirm the applicable rating for the selected model and operating conditions.
What is the maximum oil flow?
The product page lists a series-level maximum of 75 L/min. The model table specifies continuous-operation maximum flow values of 40 L/min for MR50C and 60 L/min for the other listed models. Use the individual model data for selection.
What information is needed to select a hydraulic motor?
The main requirements are output torque, rotational speed, available oil flow, pressure difference, duty cycle, mounting dimensions and hydraulic circuit conditions.